Display package



Oct. 13, 1942. L. L. SALFISBERG DISPLAY PACKAGE vFiled Feb. 1, 1941 rINVENTOR M ATTORNEY Fatented Oct. 13, 1942 2,298,421 DISPLAY PACKAGELeroy L. Salfisberg, South Orange, N. J., assignor to lvers-Lee Company,Newark, N. 3., a corporation of Delaware Application February 1, 1941,Serial No. 376,966

1 Claim. (Cl. 206-78) This invention relates generally to packages thathave one Wall or a portion thereof formed of flexible transparentmaterial through which the contents of the packages may be viewed ordisplayed, and the invention especially contemplates such a package forpowdered, granular or other substance capable of flowing.

One knownpackage of this character comprises a bag-like structurepolygonal in plan which includes two opposed layers of sheet material,at least one of which is transparent, that are secured together duringformation of the package along all margins except one which provides amouth through which the powder or other substance to be packaged isinserted and which is closed by sealing the two layers together alongsaid margin. Generally said layers are thermoplastic or havethermoplastic coatings, and margins of the layers at the mouth of thepackage are sealed together under application of heat and pressure.

During the manufacture and filling of packages of this character,frequently some of the powder or other substance being packaged adheresto or becomes lodgedbetween the margins of the layers of packaginmaterial that form the mouth of the package, so as to cause imperfect orinsecure sealing of said margins. Also, such substance is visiblebetween said sealed margins and produces an untidy and unattractiveappearance, especially when the packaged substance is colored. Moreover,when all margins oi the package are crimp-sealed, the contrast betweenthe seal along the margin at the mouth and the seals along the othermargins, is accentuated and seriously detracts from the appearance ofthe package.

Prime objects of the invention are to provide a package of the generalcharacter described which shall embody novel and improved features ofconstruction that, will overcome the aforesaid objections anddisadvantages of knownpackages; and to provide such a package 'soconstructed that the sealed margins at the mouth of the package shall bereenforced and securely connected together and any of the packagedsubstance that may have lodged between said margins shall be invisible.

' Other objects, advantages and results of the invention will be broughtout by the following description in conjunction with the accompanyingdrawing in which Figure 1 is a perspective view of a display packageembodying my invention illustrating the package in unfilled opencondition.

able material such as Cellophane, Pliofilm."-

waxed paper or the like. The transparent sheet is arranged in superposedrelation to the opaque sheet and has all marginal portions thereof,except one, secured to the corresponding marginal portions of the opaquesheet as indicated at 4, 5 and 6. The other marginal portion 1 of thetransparent sheet is initially free from the corresponding marginalportion 8 of the opaque sheet so as to form an opening or mouth betweensaid marginal portions through which a commodity may be inserted intothe pocket formed between the sheets, as shown in Figures 1 and 3.

The marginal portion 7 of the transparent sheet terminates short of themarginal portion 8 of the opaque sheet, or, conversely the marginalportion 8 of the opaque sheet initially extends beyond the correspondingmarginal portion '5 of the transparent sheet, so that said marginalportion 8 forms a flap to be folded over and secured to the'marginalportion l of the transparent sheet for closing the said mouthand sealing the package as shown in Figures 2 and 4.

The sheets I and 2 may have their marginal portions secured to eachother in any suitable manner, but preferably the marginal portions 6, 5and 6 of the transparent sheet are sealed directly to the correspondinmarginal portions of the adjacent side of the opaque sheet.

It is desirable that the transparent sheet be thermoplastic or have athermoplastic coating at the side thereof next to the opaque sheet sothat the marginal portions 4, 5 and 6 may be sealed under application ofheat and pressure, with or without crimping 9.

Also, it is desirable that the side of the opaque sheet I adjacent thetransparent sheet have a suitable thermoplastic coating, especiallywhere the sheet 2 is not thermoplastic or does not have a thermoplasticcoating on the outside, so that the marginal portion 8 of the opaquesheet'may be sealed to the outer side of the marginal portion 1 of thetransparent sheet by application of heat and pressure, with or withoutcrimping Ill.

Both sides of the opaque sheet preferably are of the same color. Theadvantage of this will be apparent when it is observed that the side ofthe opaque sheet next to the transparent sheet marginal portion willcorrespond in color to the other marginal portions 4, 5 and 6, andthereby ensure a minimum of contrast in appearance in the severalmarginal portions of the package.

To provide a neat and attractive appearance for the package, preferablyall of the sealed marginal zones 4, 5 and 8 are of uniform width andcharacter, and the sealed folded over marginal portion 8 of the opaquesheet is of the same width and character as the other marginal portions.

A package of this character is ofespecial utility for packaging powder,granular or other flowing materials where it is desired that-thecontents of the package shall be displayed or visible through at leastone wall of the package.

The package may be filled in any suitable manner; for example, thepackage may be formed, filled and sealed in a continuous operation asdescribed in my copending application Serial No. 290,604 filed August17, 1939.

For instance, in filling the package the powder Whether or not theinside of the marginal portion I of the transparent sheet is sealed tothe juxtaposed portion of the opaque sheet is immaterial, but preferablysuch a seal is efiected so that there will be in effect a double sealfor the mouth of the package, i. e. a seal between the or othercommodity is inserted as by a pouring spout through the mouth betweenthe marginal portions I and 8 of the two sheets I and 2. During thisfilling operation, generally some of the powder or other commodityadheres to or becomes:

tions visible through the transparent sheet when w the package issealed. With my invention, the marginal portion 8 of the opaque sheet issealed to the clean outside of the marginal portion I of the transparentsheet, so that a secure seal and closure of the package is ensured. Atthe same time, the folded over opaque marginal portion 8 covers orobscures any particles of the commodity that may be lodged beneath themarginal portion 1 of the transparent sheet so that none of thecommodity will be visible in the seal. Furthermore the folded overmarginal portion or flap 8 reenforces the sealed mouth of the packinsideof said marginal portion 1 and the main portion of the opaque sheet andanother seal between the outside of said marginal portion 'I and thefolded over flap 8.

tially indistinguishable from. the other sealed zones.

The closed package may be easily opened by tearing the sheets along theedge of the folded over flap 8 which provides a relatively stiff andstraight edge to facilitate tearing of the sheets.

If desired the edges of the package may be notched, for example as withnotches I i to facilitate initiation of the tearing operation.

Many modifications and changes in the details of structure of thepackage will occur to those skilled in the art as within the spirit andscope of the invention.

Having thus described my invention, what I claim is:

A display package containing powder and comprising an opaque back sheethaving the same color at both sides, a transparent sheet overlying oneside of said opaque sheet and having all marginal portions except onesealed directly to the corresponding marginal portions of said side ofthe opaque sheet along zones of uniform width and appearance and forminga powder receiving pocket between the sheets having a mouth between saidone marginal portion of the transparent sheet and said opaque sheet,said one marginal portion of the transparent sheet terminating short ofthe corresponding marginal portion of the opaque sheet which forms aflap which is folded over and sealed to the outside of said one marginalportion of the transparent sheet along a zone of substantially the sameappearance as .the other said zones to close said mouth and conceal anypowder that lies between said opaque sheet and said marginal portion ofthe transparent sheet at said mouth, the color of the opaque sheet beingvisible throughout all of said zones and said fiap being substantiallyindistinguishable from the other sealed zones so that said zones form acontinuous border surrounding said compartment and of substantiallyuniform appearance throughout.

LEROY L. SALFISBERG.

